package operation;

import book.Book;
import book.BookList;

import java.util.Scanner;

public class DelOperation implements IOPeration {
    @Override
    public void work(BookList bookList){
        System.out.println("请输入你要删除图书的名字：");
        Scanner scanner = new Scanner(System.in);
        String name =  scanner.nextLine();
        int index = 0;
        int currentSize = bookList.getUsedSize();
        int i = 0;
        for (; i < currentSize; i++) {
            Book book = bookList.getPos(i);
            if(book.getName().equals(name)){
                index = i;
               break;
            }

        }
        if(i==currentSize){
            System.out.println("没有你要删除的图书！");
            return;
        }
        for (int j = index; j <currentSize-1 ; j++) {
            Book book = bookList.getPos(j+1);
            bookList.setBooks(j,book);
        }
        bookList.setBooks(currentSize-1,null);
        bookList.setUsedSize(currentSize-1);
        System.out.println("删除成功");
    }
}
